[cisco-voip] last number dialed from an analog fxs phone

[netty]

I am trying to check the last number an fxs connected device called.  
Using show voice call we can see some details on the ports, but if is  
quite limited:

router#sh voice call 0/0/2
0/0/2 -          -  -                     vpm level 1 state =  
FXSLS_ONHOOK
vpm level 0 state = S_UP
calling number 303, calling name ANPhones, calling time 06/05 14:32
router#sh voice call 0/1/1
0/1/1 -          -  -                     vpm level 1 state =  
FXOLS_ONHOOK
vpm level 0 state = S_UP
calling number 01232987654, calling name , calling time 06/04 18:51


So I can see the last time the fxs device made a call, but not the  
called number,
And I can see when the fxo port last received a call and from where,  
but not when it last made a call or where.

Anyone know if this can be shown?
The 'sh call history voice' gets overwritten with voip calls quickly,  
I was too late for that...
The show dialpeers for ext 303 or the dial-peer number would hit both  
give the output below, would have been helpful if they were populated :/
  voice class called-number:
            inbound = `', outbound = `'

It seems sensible to be able to get a last called number out, either  
from details on the fxs port or on the fxo port but that doesn't mean  
it can be done...